/*
package April._29;

import org.w3c.dom.Node;

public class answer2 {
    public String getValue(Node head, int x){

        Node later = head;   // 后行结点
        Node forward = head; // 先行结点

        // 先让先行结点向后移动x步
        while (x != 0){
            forward = forward.next;
            x--;
        }

        //此时, 先行结点和后行结点差x步

        // 同时单步后移
        while (forward != null){
            forward = forward.next;
            later = later.next;
        }

        return later.value;
    }
}
*/
